Camera optical lens

ABSTRACT

The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: an aperture; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power. The camera optical lens satisfies following conditions: −9.00≤f2/f≤−6.00; 9.00≤f2/f4≤13.00; 11.00≤(R3+R4)/(R3−R4)≤20.00; and 0.02≤R7/R8≤0.30.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and more particularly, to a camera optical lens suitable for handheld terminal devices such as smart phones or digital cameras and camera devices such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but in general the photosensitive devices of camera lens are nothing more than Charge Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices become smaller, plus the current development trend of electronic products towards better functions and thinner and smaller dimensions, miniature camera lenses with good imaging quality therefore have become a mainstream in the market.

In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure, or even a five-piece structure. Also, with the development of technology and the increase of the diverse demands of users, and as the pixel area of photosensitive devices is becoming smaller and smaller and the requirement of the system on the imaging quality is improving constantly, a six-piece lens structure gradually appears in lens designs. Although the common six-piece lens has good optical performance, its settings on refractive power, lens spacing and lens shape still have some irrationality, which results in that the lens structure cannot achieve a high optical performance while satisfying design requirements for wide-angle and ultra-thin lenses.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 9;

FIG. 13 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 4 of the present disclosure;

FIG. 14 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 13;

FIG. 15 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 13; and

FIG. 16 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 13.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present disclosure provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment 1 of the present disclosure. The camera optical lens 10 includes 6 lenses. Specifically, the camera optical lens 10 includes, from an object side to an image side, an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6. An optical element such as a glass plate GF can be arranged between the sixth lens L6 and an image plane Si. The glass plate GF can be a glass cover plate or an optical filter. In other embodiments, the glass plate GF can be arranged at other positions.

In present embodiment, the first lens L1 has a positive refractive power, and has an object side surface being a convex surface and an image object surface being a concave surface; the second lens L2 has a negative refractive power, and has an object side surface being a convex surface and an image object surface being a concave surface; the third lens L3 has a positive refractive power, and has an object side surface being a concave surface and an image object surface being a convex surface; the fourth lens L4 has a negative refractive power, and has an object side surface being a concave surface and an image object surface being a convex surface; the fifth lens L5 has a positive refractive power, and has an object side surface being a convex surface and an image object surface being a convex surface; and a sixth lens L6 has a negative refractive power, and has an object side surface being a concave surface and an image object surface being a concave surface.

Here, a focal length of the camera optical lens 10 is defined as f, a focal length of the second lens is defined as f2, a focal length of the fourth lens is defined as f4, a curvature radius of the object side surface of the second lens is defined as R3, a curvature radius of the image side surface of the second lens is defined as R4, a curvature radius of the object side surface of the fourth lens is defined as R7, and a curvature radius of the image side surface of the fourth lens is defined as R8. The camera optical lens 10 should satisfy following conditions:

−9.00≤f2/f≤−6.00  (1);

9.00≤f2/f4≤13.00  (2);

11.00≤(R3+R4)/(R3−R4)≤20.00  (3); and

0.02≤R7/R8≤0.30  (4).

The condition (1) specifies a ratio of the focal length of the second lens L2 and the focal length of the camera optical lens 10. When the condition is satisfied, a spherical aberration generated by the first lens and the field curvature of the system can be effectively balanced.

The condition (2) specifies a ratio of the focal length of the second lens L2 and the focal length of the fourth lens L4. The appropriate distribution of the focal lengths leads to a better imaging quality and a lower sensitivity.

The condition (3) specifies a shape of the second lens L2. This can facilitate correction of an on-axis chromatic aberrations.

The condition (4) specifies a shape of the fourth lens L4. Out of this range, a development towards ultra-thin lenses would make it difficult to correct the problem like an off-axis aberration.

In this embodiment, with the above configurations of the lenses, the camera optical lens can achieve a high optical performance while satisfying design requirements for wide-angle and ultra-thin lenses.

In an example, an on-axis thickness of the third lens is defined as d5, and a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a following condition:

0.10≤d5/TTL≤0.20  (5).

The condition (5) specifies a ratio of the on-axis thickness of the third lens L3 to TTL. This can facilitate improving the image quality of the camera optical lens while achieving ultra-thin lenses.

In an example, an on-axis thickness of the first lens is defined as d1, and an on-axis distance from the image side surface of the first lens to the object side surface of the second lens is defined as d2. The camera optical lens 10 should satisfy a following condition:

7.00≤d1/d2≤10.00  (6).

The condition (6) specifies a ratio of the on-axis thickness of the first lens L1 and the on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2. This can facilitate reducing a total length of the camera optical lens, thereby achieving ultra-thin lenses.

In an example, a curvature radius of the object side surface of the sixth lens is defined as R11, and a curvature radius of the image side surface of the sixth lens is defined as R12. The camera optical lens 10 should satisfy a following condition:

0.20≤(R11+R12)/(R11−R12)≤0.80  (7).

The condition (7) specifies a shape of the sixth lens R6. This can facilitate correction of an off-axis aberration.

In addition, a surface of a lens can be set as an aspherical surface. The aspherical surface can be easily formed into a shape other than the spherical surface, so that more control variables can be obtained to reduce the aberration, thereby reducing the number of lenses and thus effectively reducing a total length of the camera optical lens according to the present disclosure. In an embodiment of the present disclosure, both an object side surface and an image side surface of each lens are aspherical surfaces.

It should be noted that the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 that constitute the camera optical lens 10 of the present embodiment have the structure and parameter relationships as described above, and therefore, the camera optical lens 10 can reasonably distribute the refractive power, the surface shape, the on-axis thickness and the like of each lens, and thus correct various aberrations. TTL and an image height (IH) of the camera optical lens 10 satisfy a condition of TTL/IH≤1.47. The field of view (FOV) of the camera optical lens 10 satisfies FOV≥78 degrees. This can achieve a high imaging performance while satisfying design requirements for wide-angle and ultra-thin lenses.

In an example, inflexion points and/or arrest points can be arranged on the object side surface and/or image side surface of the lens, so as to satisfy the demand for the high quality imaging. The description below can be referred to for specific implementations.

The design information of the camera optical lens 10 in Embodiment 1 of the present disclosure is shown in the following. It should be noted that each of the distance, radii and the central thickness is in a unit of millimeter (mm).

Table 1 and Table 2 show design data of the camera optical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 1 R d nd νd S1 ∞  d0= −0.475 R1 2.028  d1= 0.794 nd1 1.5444 ν1 55.82 R2 6.486  d2= 0.088 R3 4.457  d3= 0.282 nd2 1.6700 ν2 19.39 R4 3.729  d4= 0.457 R5 −13.549  d5= 0.763 nd3 1.5444 ν3 55.82 R6 −1.955  d6= 0.126 R7 −2.146  d7= 0.249 nd4 1.6449 ν4 22.54 R8 −65.936  d8= 0.400 R9 3.399  d9= 0.795 nd5 1.6400 ν5 23.54 R10 −64.065 d10= 0.634 R11 −5.430 d11= 0.495 nd6 1.5444 ν6 55.82 R12 3.084 d12= 0.338 R13 ∞ d13= 0.210 R14 ∞ d14= 0.218 ndg 1.5168 νg 64.17 R14 ∞ d14= 0.125

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radius for a lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of an object side surface of the optical filter GF;

R14: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens or an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface of the first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;

d13: on-axis thickness of the optical filter GF;

d14: on-axis distance from the image side surface of the optical filter GF to the image plane Si;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspheric surface data of respective lens in the camera optical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10 R1 −2.84692E−01 −9.13480E−04 2.44391E−02 −5.64018E−02   7.35095E−02 R2 −3.21993E+01 −5.67713E−02 8.32558E−02 −1.91801E−01   3.40175E−01 R3   9.41653E+00 −1.02455E−01 1.13847E−01 −3.27403E−01   7.69990E−01 R4   7.36617E+00 −5.03770E−02 7.08281E−02 −2.75959E−01   7.61053E−01 R5   1.10200E+02 −1.81939E−02 −4.15380E−02     2.94156E−01 −9.68247E−01 R6 −1.63659E+01 −1.16710E−01 1.63416E−01 −6.33544E−02 −3.25794E−01 R7 −1.84057E+01 −1.13930E−01 1.76913E−01 −2.11462E−01   1.76543E−01 R8 −1.00103E+03 −8.96420E−02 3.46015E−02   2.07000E−02 −4.64495E−02 R9 −2.58143E+01   3.21074E−02 −8.36303E−02     8.59644E−02 −6.16987E−02 R10   3.67086E+02   3.67104E−02 −5.35766E−02     4.11059E−02 −2.29211E−02 R11   1.05662E+00 −1.03673E−01 3.21086E−02 −6.68529E−03   2.06954E−03 R12 −1.44504E+01 −7.26033E−02 2.81862E−02 −9.29785E−03   2.33129E−03 Aspherical surface coefficients A12 A14 A16 A18 A20 R1 −5.89508E−02   2.91335E−02 −8.80154E−03   1.46418E−03 −1.20574E−04 R2 −3.83478E−01   2.66845E−01 −1.13048E−01   2.68688E−02 −2.76030E−03 R3 −1.10845E+00   9.78599E−01 −5.24686E−01   1.57502E−01 −2.03626E−02 R4 −1.21907E+00   1.15405E+00 −6.39637E−01   1.90532E−01 −2.32981E−02 R5   1.77893E+00 −1.98190E+00   1.33183E+00 −4.98939E−01   8.02690E−02 R6   7.07639E−01 −7.08761E−01   3.92391E−01 −1.15523E−01   1.41354E−02 R7 −1.18901E−01   6.33436E−02 −2.37712E−02   5.37692E−03 −5.63422E−04 R8   3.40276E−02 −1.23896E−02   2.29670E−03 −1.83943E−04   2.53384E−06 R9   2.82899E−02 −8.18420E−03   1.42803E−03 −1.35560E−04   5.35330E−06 R10   8.42979E−03 −1.98698E−03   2.88673E−04 −2.35902E−05   8.30852E−07 R11 −5.56782E−04   8.95596E−05 −8.13667E−06   3.91307E−07 −7.84286E−09 R12 −4.07086E−04   4.67981E−05 −3.33707E−06   1.32709E−07 −2.23508E−09

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, Al2, A14, A16, A18 and A20 are aspheric surface coefficients.

IH: Image Height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2) ]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰ +A12x¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰  (8)

In the present embodiment, an aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (8). However, the present disclosure is not limited to the aspherical polynomials form shown in the condition (8).

Table 3 and Table 4 show design data of inflexion points and arrest points of respective lens in the camera optical lens 10 according to Embodiment 1 of the present disclosure. P1R1 and P1R2 represent the object side surface and the image side surface of the first lens L1, respectively, P2R1 and P2R2 represent the object side surface and the image side surface of the second lens L2, respectively, P3R1 and P3R2 represent the object side surface and the image side surface of the third lens L3, respectively, P4R1 and P4R2 represent the object side surface and the image side surface of the fourth lens L4, respectively, P5R1 and P5R2 represent the object side surface and the image side surface of the fifth lens L5, respectively, and P6R1 and P6R2 represent the object side surface and the image side surface of the sixth lens L6, respectively. The data in the column named “inflexion point position” refers to vertical distances from inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” refers to vertical distances from arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Number of Inflexion point Inflexion point Inflexion point inflexion points position 1 position 2 position 3 P1R1 1 1.255 P1R2 1 0.555 P2R1 P2R2 P3R1 P3R2 P4R1 P4R2 1 1.275 P5R1 2 0.735 1.975 P5R2 3 0.205 0.675 2.445 P6R1 1 1.655 P6R2 2 0.545 3.225

TABLE 4 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 P1R2 1 1.035 P2R1 P2R2 P3R1 P3R2 P4R1 P4R2 1 1.675 P5R1 1 1.245 P5R2 2 0.385 0.855 P6R1 P6R2 1 1.105

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 435 nm, 486 nm, 546 nm, 587 nm and 656 nm after passing the camera optical lens 10 according to Embodiment 1. FIG. 4 illustrates a field curvature and a distortion of light with a wavelength of 546 nm after passing the camera optical lens 10 according to Embodiment 1, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

Table 17 below further lists various values of Embodiments 1, 2, 3 and 4 and values corresponding to parameters which are specified in the above conditions.

As shown in Table 17, Embodiment 1 satisfies respective conditions.

In this embodiment, the entrance pupil diameter of the camera optical lens is 2.742 mm. The image height of 1.0 H is 4.00 mm. The FOV (field of view) is 78.84°. Thus, the camera optical lens can achieve a high optical performance while satisfying design requirements for wide-angle and ultra-thin lenses.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 in Embodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞  d0= −0.464 R1 2.050  d1= 0.892 nd1 1.5444 ν1 55.82 R2 6.259  d2= 0.090 R3 5.114  d3= 0.255 nd2 1.6700 ν2 19.39 R4 4.269  d4= 0.504 R5 −11.305  d5= 0.609 nd3 1.5444 ν3 55.82 R6 −1.864  d6= 0.101 R7 −2.137  d7= 0.260 nd4 1.6449 ν4 22.54 R8 −88.559  d8= 0.397 R9 3.303  d9= 0.726 nd5 1.6400 ν5 23.54 R10 −603.699 d10= 0.708 R11 −5.318 d11= 0.490 nd6 1.5444 ν6 55.82 R12 3.493 d12= 0.338 R13 ∞ d13= 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14= 0.272

Table 6 shows aspheric surface data of respective lenses in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10 R1 −3.35352E−01 −2.80354E−03 2.48362E−02 −5.63287E−02   7.33405E−02 R2 −1.97822E+01 −6.20933E−02 8.05367E−02 −1.91530E−01   3.40539E−01 R3   1.29683E+01 −9.27665E−02 1.14051E−01 −3.27178E−01   7.70456E−01 R4   8.60291E+00 −3.57671E−02 7.51925E−02 −2.72976E−01   7.62465E−01 R5   7.20919E+01 −3.13121E−02 −3.38234E−02     2.91580E−01 −9.70767E−01 R6 −1.48647E+01 −1.16133E−01 1.61201E−01 −6.35223E−02 −3.24590E−01 R7 −1.97585E+01 −1.05882E−01 1.79304E−01 −2.09766E−01   1.77211E−01 R8   9.99995E+02 −9.00417E−02 3.61072E−02   2.08446E−02 −4.65122E−02 R9 −2.23047E+01   3.43610E−02 −8.42180E−02     8.58658E−02 −6.17136E−02 R10   1.00000E+03   3.82307E−02 −5.38431E−02     4.10433E−02 −2.29199E−02 R11   1.01733E+00 −1.03384E−01 3.20981E−02 −6.68698E−03   2.06937E−03 R12 −1.63680E+01 −7.34526E−02 2.81922E−02 −9.30067E−03   2.33102E−03 Aspherical surface coefficients A12 A14 A16 A18 A20 R1 −5.90423E−02   2.91186E−02 −8.78978E−03   1.47880E−03 −1.12165E−04 R2 −3.83313E−01   2.66907E−01 −1.13015E−01   2.68792E−02 −2.77865E−03 R3 −1.10810E+00   9.78754E−01 −5.24677E−01   1.57455E−01 −2.04048E−02 R4 −1.21877E+00   1.15402E+00 −6.39669E−01   1.90593E−01 −2.31239E−02 R5   1.77914E+00 −1.98070E+00   1.33267E+00 −4.98859E−01   7.98091E−02 R6   7.08282E−01 −7.08825E−01   3.92146E−01 −1.15627E−01   1.41887E−02 R7 −1.18870E−01   6.32186E−02 −2.38516E−02   5.36713E−03 −5.39737E−04 R8   3.39980E−02 −1.23957E−02   2.29634E−03 −1.83750E−04   2.56030E−06 R9   2.82878E−02 −8.18436E−03   1.42807E−03 −1.35535E−04   5.36301E−06 R10   8.43095E−03 −1.98679E−03   2.88690E−04 −2.35904E−05   8.30301E−07 R11 −5.56800E−04   8.95575E−05 −8.13687E−06   3.91311E−07 −7.83501E−09 R12 −4.07101E−04   4.67976E−05 −3.33704E−06   1.32718E−07 −2.23374E−09

Table 7 and Table 8 show design data of inflexion points and arrest points of respective lens in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion point Inflexion point Inflexion point inflexion points position 1 position 2 position 3 P1R1 1 1.275 P1R2 1 0.535 P2R1 P2R2 P3R1 1 1.195 P3R2 1 1.395 P4R1 P4R2 1 1.255 P5R1 2 0.755 1.975 P5R2 3 0.065 0.755 2.435 P6R1 1 1.655 P6R2 2 0.525 3.195

TABLE 8 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 P1R2 1 0.985 P2R1 P2R2 P3R1 P3R2 P4R1 P4R2 P5R1 1 1.265 P5R2 2 0.105 1.045 P6R1 P6R2 1 1.035

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 435 nm, 486 nm, 546 nm, 587 nm and 656 nm after passing the camera optical lens 20 according to Embodiment 2. FIG. 8 illustrates a field curvature and a distortion of light with a wavelength of 546 nm after passing the camera optical lens 20 according to Embodiment 2.

As shown in Table 17, Embodiment 2 satisfies respective conditions.

In this embodiment, the entrance pupil diameter of the camera optical lens is 2.770 mm. The image height of 1.0 H is 4.00 mm. The FOV (field of view) is 78.26°. Thus, the camera optical lens can achieve a high optical performance while satisfying design requirements for wide-angle and ultra-thin lenses.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 in Embodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞  d0= −0.484 R1 2.135  d1= 0.705 nd1 1.5444 ν1 55.82 R2 8.449  d2= 0.100 R3 2.539  d3= 0.257 nd2 1.6700 ν2 19.39 R4 2.153  d4= 0.386 R5 −103.991  d5= 1.152 nd3 1.5444 ν3 55.82 R6 −1.654  d6= 0.086 R7 −1.404  d7= 0.252 nd4 1.6449 ν4 22.54 R8 −4.748  d8= 0.400 R9 8.554  d9= 0.725 nd5 1.6400 ν5 23.54 R10 −3.865 d10= 0.388 R11 −14.065 d11= 0.447 nd6 1.5444 ν6 55.82 R12 1.639 d12= 0.338 R13 ∞ d13= 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14= 0.423

Table 10 shows aspheric surface data of respective lenses in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10 R1 −7.73152E−03 −7.46754E−03 3.52272E−02 −6.30318E−02   7.74932E−02 R2   6.53092E+00 −3.83244E−02 9.47474E−02 −2.06154E−01   3.42855E−01 R3   2.64398E+00 −8.41889E−02 8.64199E−02 −3.34638E−01   7.67983E−01 R4   1.90851E+00 −4.90917E−02 2.25897E−02 −2.52979E−01   7.50730E−01 R5 −9.96444E+02   1.15779E−02 −7.35746E−02     3.45126E−01 −9.86956E−01 R6 −1.21769E+01 −5.97159E−02 1.67987E−01 −6.08597E−02 −3.25903E−01 R7 −1.06454E+01 −7.68289E−02 1.89408E−01 −2.14911E−01   1.74723E−01 R8 −1.16840E+02 −7.93505E−02 3.27608E−02   2.10145E−02 −4.62005E−02 R9 −2.24116E+02   3.04341E−02 −8.31506E−02     8.52150E−02 −6.18249E−02 R10 −4.40337E+01   4.69886E−02 −5.59287E−02     4.12478E−02 −2.28949E−02 R11   7.56333E+00 −1.05786E−01 3.19809E−02 −6.69491E−03   2.06888E−03 R12 −8.47320E+00 −7.25185E−02 2.78355E−02 −9.30956E−03   2.33164E−03 Aspherical surface coefficients A12 A14 A16 A18 A20 R1 −6.04810E−02   2.98646E−02 −8.73480E−03 1.38644E−03 −9.44760E−05 R2 −3.79339E−01   2.66831E−01 −1.13816E−01 2.66751E−02 −2.62480E−03 R3 −1.10765E+00   9.79266E−01 −5.24630E−01 1.57385E−01 −2.06514E−02 R4 −1.22642E+00   1.15474E+00 −6.36269E−01 1.92519E−01 −2.59688E−02 R5   1.77017E+00 −1.97971E+00   1.33714E+00 −4.97484E−01     7.77748E−02 R6   7.06558E−01 −7.08978E−01   3.92774E−01 −1.15318E−01     1.39363E−02 R7 −1.18413E−01   6.36752E−02 −2.37104E−02 5.30651E−03 −6.25086E−04 R8   3.40764E−02 −1.23952E−02   2.28960E−03 −1.87046E−04     3.10966E−06 R9   2.82969E−02 −8.17683E−03   1.42991E−03 −1.35380E−04     5.31721E−06 R10   8.42658E−03 −1.98651E−03   2.88787E−04 −2.35875E−05     8.25753E−07 R11 −5.56827E−04   8.95569E−05 −8.13668E−06 3.91329E−07 −7.82931E−09 R12 −4.07009E−04   4.68059E−05 −3.33656E−06 1.32724E−07 −2.23731E−09

Table 11 and Table 12 show design data of inflexion points and arrest points of respective lens in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion point Inflexion point inflexion points position 1 position 2 P1R1 P1R2 P2R1 1 0.885 P2R2 1 1.045 P3R1 2 0.505 1.015 P3R2 2 0.675 1.025 P4R1 2 0.735 1.065 P4R2 1 1.185 P5R1 2 0.595 1.855 P5R2 P6R1 1 1.625 P6R2 2 0.595 2.965

TABLE 12 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 P1R2 P2R1 P2R2 P3R1 2 0.785 1.085 P3R2 P4R1 P4R2 P5R1 1 0.975 P5R2 P6R1 P6R2 1 1.355

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 435 nm, 486 nm, 546 nm, 587 nm and 656 nm after passing the camera optical lens 30 according to Embodiment 3. FIG. 12 illustrates field curvature and distortion of light with a wavelength of 546 nm after passing the camera optical lens 30 according to Embodiment 3.

As shown in Table 17, Embodiment 3 satisfies respective conditions.

In this embodiment, the entrance pupil diameter of the camera optical lens is 2.713 mm. The image height of 1.0 H is 4.00 mm. The FOV (field of view) is 79.41°. Thus, the camera optical lens can achieve a high optical performance while satisfying design requirements for wide-angle and ultra-thin lenses.

Embodiment 4

Embodiment 4 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

Table 13 and Table 14 show design data of a camera optical lens 40 in Embodiment 2 of the present disclosure.

TABLE 13 R d nd νd S1 ∞  d0= −0.475 R1 2.071  d1= 0.729 d1 1.5444 ν1 55.82 R2 5.745  d2= 0.073 R3 1.880  d3= 0.172 nd2 1.6700 ν2 19.39 R4 1.700  d4= 0.567 R5 −18.271  d5= 0.722 nd3 1.5444 ν3 55.82 R6 −2.086  d6= 0.141 R7 −1.954  d7= 0.260 nd4 1.6449 ν4 22.54 R8 −9.327  d8= 0.453 R9 3.575  d9= 0.708 nd5 1.6400 ν5 23.54 R10 −77.800 d10= 0.685 R11 −10.800 d11= 0.477 nd6 1.5444 ν6 55.82 R12 2.799 d12= 0.338 R13 ∞ d13= 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14= 0.297

Table 14 shows aspheric surface data of respective lenses in the camera optical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 14 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10 R1 −2.66759E−01   1.10228E−03   2.74031E−02 −5.81150E−02 7.40361E−02 R2 −1.26921E+02 −1.82346E−02   7.82181E−02 −1.98747E−01 3.41703E−01 R3   8.99357E−01 −1.59106E−01   1.23792E−01 −3.40958E−01 7.68657E−01 R4   7.33756E−01 −8.83832E−02   2.68292E−02 −2.44195E−01 7.55541E−01 R5   9.65478E+01 −1.26938E−02 −3.79789E−02   3.12768E−01 −9.80981E−01   R6 −1.70411E+01 −1.06363E−01   1.70212E−01 −5.64946E−02 −3.25848E−01   R7 −1.37239E+01 −1.11049E−01   1.86570E−01 −2.08985E−01 1.76193E−01 R8 −1.64302E+02 −8.64501E−02   3.47480E−02   2.09517E−02 −4.63077E−02   R9 −2.65028E+01   3.34824E−02 −8.28017E−02   8.59200E−02 −6.17315E−02   R10   8.70551E+02   3.67109E−02 −5.26961E−02   4.10317E−02 −2.29268E−02   R11   3.77833E+00 −1.03816E−01   3.18753E−02 −6.70346E−03 2.06829E−03 R12 −1.06574E+01 −7.32948E−02   2.82562E−02 −9.30417E−03 2.33101E−03 Aspherical surface coefficients A12 A14 A16 A18 A20 R1 −5.87719E−02 2.91357E−02 −8.77425E−03   1.51884E−03 −1.32326E−04 R2 −3.81075E−01 2.67392E−01 −1.13437E−01   2.65169E−02 −2.63017E−03 R3 −1.10653E+00 9.79443E−01 −5.24714E−01   1.57252E−01 −2.05340E−02 R4 −1.22730E+00 1.15348E+00 −6.36701E−01   1.92006E−01 −2.48752E−02 R5   1.77206E+00 −1.97913E+00     1.33603E+00 −4.97609E−01   7.82639E−02 R6   7.05188E−01 −7.09486E−01     3.92924E−01 −1.15145E−01   1.39342E−02 R7 −1.19341E−01 6.31895E−02 −2.37704E−02   5.41712E−03 −5.72675E−04 R8   3.40498E−02 −1.24018E−02     2.28917E−03 −1.85602E−04   3.05241E−06 R9   2.82925E−02 −8.18218E−03     1.42845E−03 −1.35575E−04   5.31453E−06 R10   8.43050E−03 −1.98677E−03     2.88697E−04 −2.35902E−05   8.29934E−07 R11 −5.56870E−04 8.95535E−05 −8.13693E−06   3.91395E−07 −7.80368E−09 R12 −4.07056E−04 4.68028E−05 −3.33675E−06   1.32713E−07 −2.23650E−09

Table 15 and Table 16 show design data of inflexion points and arrest points of respective lens in the camera optical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 15 Number of Inflexion point Inflexion point inflexion points position 1 position 2 P1R1 P1R2 1 1.085 P2R1 P2R2 P3R1 1 1.205 P3R2 P4R1 P4R2 2 1.215 1.645 P5R1 2 0.755 2.035 P5R2 2 0.185 0.705 P6R1 1 1.625 P6R2 2 0.575 2.985

TABLE 16 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 P1R2 P2R1 P2R2 P3R1 P3R2 P4R1 P4R2 P5R1 1 1.275 P5R2 2 0.335 0.925 P6R1 1 2.885 P6R2 1 1.185

FIG. 14 and FIG. 15 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 435 nm, 486 nm, 546 nm, 587 nm and 656 nm after passing the camera optical lens 40 according to Embodiment 4. FIG. 16 illustrates a field curvature and a distortion of light with a wavelength of 546 nm after passing the camera optical lens 40 according to Embodiment 4.

As shown in Table 17, Embodiment 4 satisfies respective conditions.

In this embodiment, the entrance pupil diameter of the camera optical lens is 2.735 mm. The image height of 1.0 H is 4.00 mm. The FOV (field of view) is 78.98°. Thus, the camera optical lens can achieve a high optical performance while satisfying design requirements for wide-angle and ultra-thin lenses.

TABLE 17 Embodiment Embodiment Embodiment Embodiment 1 2 3 4 Notes f2/f −8.32 −8.95 −6.02 −8.90 Condition (1) f2/f4 11.71 12.90 9.06 11.08 Condition (2) (R3 + R4)/(R3 − 11.24 11.10 12.16 19.89 Condition R4) (3) R7/R8 0.03 0.02 0.30 0.21 Condition (4) d5/TTL 0.13 0.10 0.20 0.12 Condition (5) d1/d2 9.02 9.91 7.05 9.99 Condition (6) (R11 + R12)/ 0.28 0.21 0.79 0.59 Condition (R11 − R12) (7) Fno 1.75 1.75 1.75 1.75 f 4.798 4.848 4.748 4.786 f1 5.076 5.187 5.028 5.537 f2 −39.910 −43.393 −28.569 −42.619 f3 4.083 3.993 3.063 4.240 f4 −3.409 −3.364 −3.154 −3.848 f5 5.016 5.085 4.215 5.306 f6 −3.525 −3.782 −2.659 −4.016

It can be appreciated by one having ordinary skill in the art that the description above is only embodiments of the present disclosure. In practice, one having ordinary skill in the art can make various modifications to these embodiments in forms and details without departing from the spirit and scope of the present disclosure 

What is claimed is:
 1. A camera optical lens, comprising, from an object side to an image side: an aperture; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power, wherein the camera optical lens satisfies following conditions: −9.00≤f2/f≤−6.00; −9.00≤f2/f4≤13.00; 11.00≤(R3+R4)/(R3−R4)≤20.00, and 0.02≤R7/R8≤0.30, where f denotes a focal length of the camera optical lens; f2 denotes a focal length of the second lens; f4 denotes a focal length of the fourth lens; R3 denotes a curvature radius of an object side surface of the second lens; R4 denotes a curvature radius of an image side surface of the second lens; R7 denotes a curvature radius of an object side surface of the fourth lens; and R8 denotes a curvature radius of an image side surface of the fourth lens.
 2. The camera optical lens as described in claim 1, further satisfying a following condition: 0.10≤d5/TTL≤0.20, where d5 denotes an on-axis thickness of the third lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 3. The camera optical lens as described in claim 1, further satisfying a following condition: 7.00≤d1/d2≤10.00, where d1 denotes an on-axis thickness of the first lens; and d2 denotes an on-axis distance from an image side surface of the first lens to the object side surface of the second lens.
 4. The camera optical lens as described in claim 1, further satisfying a following condition: 0.20<(R11+R12)/(R11−R12)≤0.80, where R11 denotes a curvature radius of an object side surface of the sixth lens; and R12 denotes a curvature radius of an image side surface of the sixth lens. 